baker



(No Model.)

J. W. BAKER & G. A. PRESCOTT.

UAR COUPLING.

Patented Jan. 11 1887.

INVENTOR ATTORNEYS.

WITNESSES: McZkJ/K -zW NITED TATES mes.

ATENT JACOB W. BAKER AND GEORGE A. PRESCOTT, OF DOVER, NE\V JERSEY.

CAR-COUPLING.

SPECIFICATION forming part of Letters Patent N0. 355,909, dated January11, 1887.

Application filed November 20, 1886.

.To aZl whom it may concern:

Be it known that we, J AOOB W. BAKER and GEORGE A. PREsoo'rT, both ofDover, in the county of Morris and State of New Jersey, have inventedanew and useful lmprovem ent in Car- Couplings, of which the followingis a full, clear, and exact description.

This invention relates to the coupling-pin and its lifting or operatingdevices in a drawbar and its connections, the whole, when provided withthe usual or any suitable couplinglink, constituting a car-coupling.

Theinvention consists in a coupling-pin provided with a head of peculiarconstruction,and in means of a special description forlifting oroperating said pin, substantially as hereinafter described, and wherebyjamming of the pin is avoided, and a straight lift or movement obtainedfor it under all circumstances.

The invention is more particularly intended to be applied in connectionwith certain pecu-- liar constructions and combination of parts relatingto the draw-bar and its connections,described in another application forLetters Patent by us, Serial No. 218,000, filed September 8, 1886, andin which a peculiar-constructed sliding block, arranged within apeculiarshaped recess in the draw-bar, was used, and we here show ourinvention as applied to such a construction and combination of parts.

Reference is to be had to the accompanying drawings, forming a part ofthis specification,

in which similar letters of referenceindicate corresponding parts inboth the figures.

Figure 1 represents a central vertical longitudinal section of adraw-bar and its connections having our invention applied, the partsupon the left being, shown in the position they assume when the couplingpin is in place within the couplinglink, while upon the right the partsare represented as in the position,

they assume when the coupling-pin has been raised. Fig. 2 is a face viewof the draw-bar and its connections, with the parts in position shown atthe left in Fig. 1.

A A are the draw-bars of two adjacent cars. Each ofthese draw-bars isformed, as usual, with a draw-head, B, having the usual link-recess,b.Behind this recess b there is another recess, a, formed in the draw-bar,and having its upper and lower walls or facesinclining downward to-Serial No. 219,479. (No model.)

sliding cover, S, serves to prevent said block from becomingaccidentally misplaced.

D is the coupling-pin, and E the couplinglink.

WVhen the coupling-pin is drawn upward and partially out of thedraw-head, which releases the coupling-link, the sliding block 0 is freeto move downward to the position in which it is'shown at the right inFig. 1that is, to a position so that the curved upper face, 9, of theblock will fit in the curved recess h of the coupling-pin, the shoulderf striking against the peripheral face of the pin, while the lug orprojection 6 will rest within the recess 01 of the draw-bar. The lug cthen prevents the weight of the coupling-pin from canting the block 0.

In coupling with the link of an approaching car, said link, uponentering the recess 12, will strike the forward curved face of the block0 and force the block at first straight but subsequently diagonallyupward,thereby permitting the pin to drop within the coupling-link, asshown at the left hand of Fig. 1.

So far as above described this invention is the same as that describedin our previous application for patent, hereinbefore referred to, and noclaim is here made to the same, separately considered. It is veryimportant, how-= ever, that the coupling-pin D should not be liabletojam, but should have a free straight up and-down movement when beingengaged with and disengaged from the coupling-link, and so that when twocars come together the tendency of the shock produced to throw the upperend of the pin forward will be counteracted. To these ends we constructthe head or top of the pin D with a cam-shaped slot, 70, and provide theend of the car above the drawbar with a cross-shaft, G, capable ofvibration within suitable bearings, Z Z, and having an arm or arms, in,made to carry a roller-pin, n, which passes through the slot 70 in thehead of the coupling-pin. Said shaft G is also provided with an arm, m,to which is attached a chain or loose connection, 0, that may pass upback of a pulley, r, and which serves, when pulled upon, to turn theshaf tG and cause the pin or roller carried by the arms or to lift thecoupling-pin in the draw-head, as shown to the right of Fig. 1. The slot70 is of such ashape, length, and depth that when the shaft G is turnedby pulling onthe chain to lift the coupling-pin the roller-pin n willwork forward and backward under and along the up per wall of the slot ina free and easy manner,

and after the coupling-pin has been raised and the lift released fromthe chain the shaft is free to turn back to its normal position, so thatthe roller-pin n will drop to its lowest position in the slot k over thecenter of the couplingpin, which is held raised by the block 0. So soon,however, as the block 0 is slid upward and backward by the entry of thecouplinglink the couplingpin is free to drop unrestrained by its liftingdevice, and any tendency of the coupling-pin to pitch forward or to bejammed either backward or forward will be counteracted by the roller-pina running up the inclined side walls of the slot k, the weight of thearms on assisting. The shaft G may also have a crank, t, on its end orends to control the movement of the shaft and, if necessary,to make theroller pin n act downward on the pin, should it by any possibility jam.

Having thus described our invention, what we'clai m as new, and desireto secure by Letters Patent, is-

1. A coupling-pin provided with a cam-slot, as 70, in its upper end,substantially as specified. 2. The combination, with a draw-head and acoupling-pin provided with atriangular cam slot in its upper end, ofashaft journaled on the end of the car and provided with an arm carryinga pin entering said slot, substantially as Specified.

3. The combination, with adraw-bar and its having a earn-shaped slot,70, in its upper part,

shaft G, with its attached loose operating connection 0 and roller-pinit, carried by an arm or arms connected with saidshaft, the drawbar Aand draw-head B, havinga link-recess, b, and a rear recess, 6, providedwith upper and lower inclined walls, and the sliding block 0,constructed for operation in connection with the couplingpin,essentially as herein shown and described.

J A0013 W. BAKER. GEORGE A. PRESCOTT. XVitnesses:

F. S'ruirrn,

JAMES H. NEIGI-IBOUR.

